/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011 The ManaPlus Developers * * This file is part of The ManaPlus Client. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "main.h" #ifdef USE_OPENGL #include "graphicsvertexes.h" #include "openglgraphics.h" #include "log.h" #include "resources/image.h" #include "utils/stringutils.h" #ifdef __APPLE__ #include <OpenGL/OpenGL.h> #endif #include <SDL.h> #include "debug.h" #ifndef GL_TEXTURE_RECTANGLE_ARB #define GL_TEXTURE_RECTANGLE_ARB 0x84F5 #define GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB 0x84F8 #endif const unsigned int vertexBufSize = 500; GLuint OpenGLGraphics::mLastImage = 0; OpenGLGraphics::OpenGLGraphics(): mAlpha(false), mTexture(false), mColorAlpha(false), mSync(false) { mFloatTexArray = new GLfloat[vertexBufSize * 4 + 30]; mIntTexArray = new GLint[vertexBufSize * 4 + 30]; mIntVertArray = new GLint[vertexBufSize * 4 + 30]; } OpenGLGraphics::~OpenGLGraphics() { delete[] mFloatTexArray; delete[] mIntTexArray; delete[] mIntVertArray; } void OpenGLGraphics::setSync(bool sync) { mSync = sync; } bool OpenGLGraphics::setVideoMode(int w, int h, int bpp, bool fs, bool hwaccel) { logger->log("Setting video mode %dx%d %s", w, h, fs ? "fullscreen" : "windowed"); int displayFlags = SDL_ANYFORMAT | SDL_OPENGL; mWidth = w; mHeight = h; mBpp = bpp; mFullscreen = fs; mHWAccel = hwaccel; if (fs) displayFlags |= SDL_FULLSCREEN; SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); if (!(mTarget = SDL_SetVideoMode(w, h, bpp, displayFlags))) return false; #ifdef __APPLE__ if (mSync) { const GLint VBL = 1; CGLSetParameter(CGLGetCurrentContext(), kCGLCPSwapInterval, &VBL); } #endif // Setup OpenGL glViewport(0, 0, w, h); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST); int gotDoubleBuffer; SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &gotDoubleBuffer); logger->log("Using OpenGL %s double buffering.", (gotDoubleBuffer ? "with" : "without")); char const *glExtensions = reinterpret_cast<char const *>( glGetString(GL_EXTENSIONS)); GLint texSize; bool rectTex = strstr(glExtensions, "GL_ARB_texture_rectangle"); if (rectTex) { Image::mTextureType = GL_TEXTURE_RECTANGLE_ARB; glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB, &texSize); } else { Image::mTextureType = GL_TEXTURE_2D; glGetIntegerv(GL_MAX_TEXTURE_SIZE, &texSize); } Image::mTextureSize = texSize; logger->log("OpenGL texture size: %d pixels%s", Image::mTextureSize, rectTex ? " (rectangle textures)" : ""); return true; } static inline void drawQuad(Image *image, int srcX, int srcY, int dstX, int dstY, int width, int height) { if (image->mTextureType == GL_TEXTURE_2D) { // Find OpenGL normalized texture coordinates. const float texX1 = static_cast<float>(srcX) / static_cast<float>(image->getTextureWidth()); const float texY1 = static_cast<float>(srcY) / static_cast<float>(image->getTextureHeight()); const float texX2 = static_cast<float>(srcX + width) / static_cast<float>(image->getTextureWidth()); const float texY2 = static_cast<float>(srcY + height) / static_cast<float>(image->getTextureHeight()); GLfloat tex[] = { texX1, texY1, texX2, texY1, texX2, texY2, texX1, texY2 }; GLint vert[] = { dstX, dstY, dstX + width, dstY, dstX + width, dstY + height, dstX, dstY + height }; glVertexPointer(2, GL_FLOAT, 0, &vert); glTexCoordPointer(2, GL_INT, 0, &tex); glDrawArrays(GL_QUADS, 0, 4); } else { GLint tex[] = { srcX, srcY, srcX + width, srcY, srcX + width, srcY + height, srcX, srcY + height }; GLint vert[] = { dstX, dstY, dstX + width, dstY, dstX + width, dstY + height, dstX, dstY + height }; glVertexPointer(2, GL_INT, 0, &vert); glTexCoordPointer(2, GL_INT, 0, &tex); glDrawArrays(GL_QUADS, 0, 4); } } static inline void drawRescaledQuad(Image *image, int srcX, int srcY, int dstX, int dstY, int width, int height, int desiredWidth, int desiredHeight) { if (image->mTextureType == GL_TEXTURE_2D) { // Find OpenGL normalized texture coordinates. const float texX1 = static_cast<float>(srcX) / static_cast<float>(image->getTextureWidth()); const float texY1 = static_cast<float>(srcY) / static_cast<float>(image->getTextureHeight()); const float texX2 = static_cast<float>(srcX + width) / static_cast<float>(image->getTextureWidth()); const float texY2 = static_cast<float>(srcY + height) / static_cast<float>(image->getTextureHeight()); GLfloat tex[] = { texX1, texY1, texX2, texY1, texX2, texY2, texX1, texY2 }; GLint vert[] = { dstX, dstY, dstX + desiredWidth, dstY, dstX + desiredWidth, dstY + desiredHeight, dstX, dstY + desiredHeight }; glVertexPointer(2, GL_FLOAT, 0, &vert); glTexCoordPointer(2, GL_INT, 0, &tex); glDrawArrays(GL_QUADS, 0, 4); } else { GLint tex[] = { srcX, srcY, srcX + width, srcY, srcX + width, srcY + height, srcX, srcY + height }; GLint vert[] = { dstX, dstY, dstX + desiredWidth, dstY, dstX + desiredWidth, dstY + desiredHeight, dstX, dstY + desiredHeight }; glVertexPointer(2, GL_INT, 0, &vert); glTexCoordPointer(2, GL_INT, 0, &tex); glDrawArrays(GL_QUADS, 0, 4); } } bool OpenGLGraphics::drawImage(Image *image, int srcX, int srcY, int dstX, int dstY, int width, int height, bool useColor) { if (!image) return false; srcX += image->mBounds.x; srcY += image->mBounds.y; if (!useColor) glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha); bindTexture(Image::mTextureType, image->mGLImage); setTexturingAndBlending(true); drawQuad(image, srcX, srcY, dstX, dstY, width, height); if (!useColor) { glColor4ub(static_cast<GLubyte>(mColor.r), static_cast<GLubyte>(mColor.g), static_cast<GLubyte>(mColor.b), static_cast<GLubyte>(mColor.a)); } return true; } bool OpenGLGraphics::drawRescaledImage(Image *image, int srcX, int srcY, int dstX, int dstY, int width, int height, int desiredWidth, int desiredHeight, bool useColor) { return drawRescaledImage(image, srcX, srcY, dstX, dstY, width, height, desiredWidth, desiredHeight, useColor, true); } bool OpenGLGraphics::drawRescaledImage(Image *image, int srcX, int srcY, int dstX, int dstY, int width, int height, int desiredWidth, int desiredHeight, bool useColor, bool smooth) { if (!image) return false; // Just draw the image normally when no resizing is necessary, if (width == desiredWidth && height == desiredHeight) { return drawImage(image, srcX, srcY, dstX, dstY, width, height, useColor); } // When the desired image is smaller than the current one, // disable smooth effect. if (width > desiredWidth && height > desiredHeight) smooth = false; srcX += image->mBounds.x; srcY += image->mBounds.y; if (!useColor) glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha); bindTexture(Image::mTextureType, image->mGLImage); setTexturingAndBlending(true); // Draw a textured quad. drawRescaledQuad(image, srcX, srcY, dstX, dstY, width, height, desiredWidth, desiredHeight); if (smooth) // A basic smooth effect... { glColor4f(1.0f, 1.0f, 1.0f, 0.2f); drawRescaledQuad(image, srcX, srcY, dstX - 1, dstY - 1, width, height, desiredWidth + 1, desiredHeight + 1); drawRescaledQuad(image, srcX, srcY, dstX + 1, dstY + 1, width, height, desiredWidth - 1, desiredHeight - 1); drawRescaledQuad(image, srcX, srcY, dstX + 1, dstY, width, height, desiredWidth - 1, desiredHeight); drawRescaledQuad(image, srcX, srcY, dstX, dstY + 1, width, height, desiredWidth, desiredHeight - 1); } if (!useColor) { glColor4ub(static_cast<GLubyte>(mColor.r), static_cast<GLubyte>(mColor.g), static_cast<GLubyte>(mColor.b), static_cast<GLubyte>(mColor.a)); } return true; } void OpenGLGraphics::drawImagePattern(Image *image, int x, int y, int w, int h) { if (!image) return; const int srcX = image->mBounds.x; const int srcY = image->mBounds.y; const int iw = image->mBounds.w; const int ih = image->mBounds.h; if (iw == 0 || ih == 0) return; const float tw = static_cast<float>(image->getTextureWidth()); const float th = static_cast<float>(image->getTextureHeight()); glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha); bindTexture(Image::mTextureType, image->mGLImage); setTexturingAndBlending(true); unsigned int vp = 0; const unsigned int vLimit = vertexBufSize * 4; // Draw a set of textured rectangles if (image->mTextureType == GL_TEXTURE_2D) { float texX1 = static_cast<float>(srcX) / tw; float texY1 = static_cast<float>(srcY) / th; for (int py = 0; py < h; py += ih) { const int height = (py + ih >= h) ? h - py : ih; const int dstY = y + py; for (int px = 0; px < w; px += iw) { int width = (px + iw >= w) ? w - px : iw; int dstX = x + px; float texX2 = static_cast<float>(srcX + width) / tw; float texY2 = static_cast<float>(srcY + height) / th; mFloatTexArray[vp + 0] = texX1; mFloatTexArray[vp + 1] = texY1; mFloatTexArray[vp + 2] = texX2; mFloatTexArray[vp + 3] = texY1; mFloatTexArray[vp + 4] = texX2; mFloatTexArray[vp + 5] = texY2; mFloatTexArray[vp + 6] = texX1; mFloatTexArray[vp + 7] = texY2; mIntVertArray[vp + 0] = dstX; mIntVertArray[vp + 1] = dstY; mIntVertArray[vp + 2] = dstX + width; mIntVertArray[vp + 3] = dstY; mIntVertArray[vp + 4] = dstX + width; mIntVertArray[vp + 5] = dstY + height; mIntVertArray[vp + 6] = dstX; mIntVertArray[vp + 7] = dstY + height; vp += 8; if (vp >= vLimit) { drawQuadArrayfi(vp); vp = 0; } } } if (vp > 0) drawQuadArrayfi(vp); } else { for (int py = 0; py < h; py += ih) { const int height = (py + ih >= h) ? h - py : ih; const int dstY = y + py; for (int px = 0; px < w; px += iw) { int width = (px + iw >= w) ? w - px : iw; int dstX = x + px; mIntTexArray[vp + 0] = srcX; mIntTexArray[vp + 1] = srcY; mIntTexArray[vp + 2] = srcX + width; mIntTexArray[vp + 3] = srcY; mIntTexArray[vp + 4] = srcX + width; mIntTexArray[vp + 5] = srcY + height; mIntTexArray[vp + 6] = srcX; mIntTexArray[vp + 7] = srcY + height; mIntVertArray[vp + 0] = dstX; mIntVertArray[vp + 1] = dstY; mIntVertArray[vp + 2] = dstX + width; mIntVertArray[vp + 3] = dstY; mIntVertArray[vp + 4] = dstX + width; mIntVertArray[vp + 5] = dstY + height; mIntVertArray[vp + 6] = dstX; mIntVertArray[vp + 7] = dstY + height; vp += 8; if (vp >= vLimit) { drawQuadArrayii(vp); vp = 0; } } } if (vp > 0) drawQuadArrayii(vp); } glColor4ub(static_cast<GLubyte>(mColor.r), static_cast<GLubyte>(mColor.g), static_cast<GLubyte>(mColor.b), static_cast<GLubyte>(mColor.a)); } void OpenGLGraphics::drawRescaledImagePattern(Image *image, int x, int y, int w, int h, int scaledWidth, int scaledHeight) { if (!image) return; const int srcX = image->mBounds.x; const int srcY = image->mBounds.y; const int iw = scaledWidth; const int ih = scaledHeight; if (iw == 0 || ih == 0) return; const float tw = static_cast<float>(image->getTextureWidth()); const float th = static_cast<float>(image->getTextureHeight()); glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha); bindTexture(Image::mTextureType, image->mGLImage); setTexturingAndBlending(true); unsigned int vp = 0; const unsigned int vLimit = vertexBufSize * 4; float texX1 = static_cast<float>(srcX) / tw; float texY1 = static_cast<float>(srcY) / th; // Draw a set of textured rectangles if (image->mTextureType == GL_TEXTURE_2D) { for (int py = 0; py < h; py += ih) { const int height = (py + ih >= h) ? h - py : ih; const int dstY = y + py; for (int px = 0; px < w; px += iw) { int width = (px + iw >= w) ? w - px : iw; int dstX = x + px; float texX2 = static_cast<float>(srcX + width) / tw; float texY2 = static_cast<float>(srcY + height) / th; mFloatTexArray[vp + 0] = texX1; mFloatTexArray[vp + 1] = texY1; mFloatTexArray[vp + 2] = texX2; mFloatTexArray[vp + 3] = texY1; mFloatTexArray[vp + 4] = texX2; mFloatTexArray[vp + 5] = texY2; mFloatTexArray[vp + 6] = texX1; mFloatTexArray[vp + 7] = texY2; mIntVertArray[vp + 0] = dstX; mIntVertArray[vp + 1] = dstY; mIntVertArray[vp + 2] = dstX + scaledWidth; mIntVertArray[vp + 3] = dstY; mIntVertArray[vp + 4] = dstX + scaledWidth; mIntVertArray[vp + 5] = dstY + scaledHeight; mIntVertArray[vp + 6] = dstX; mIntVertArray[vp + 7] = dstY + scaledHeight; vp += 8; if (vp >= vLimit) { drawQuadArrayfi(vp); vp = 0; } } } if (vp > 0) drawQuadArrayfi(vp); } else { for (int py = 0; py < h; py += ih) { const int height = (py + ih >= h) ? h - py : ih; const int dstY = y + py; for (int px = 0; px < w; px += iw) { int width = (px + iw >= w) ? w - px : iw; int dstX = x + px; mIntTexArray[vp + 0] = srcX; mIntTexArray[vp + 1] = srcY; mIntTexArray[vp + 2] = srcX + width; mIntTexArray[vp + 3] = srcY; mIntTexArray[vp + 4] = srcX + width; mIntTexArray[vp + 5] = srcY + height; mIntTexArray[vp + 6] = srcX; mIntTexArray[vp + 7] = srcY + height; mIntVertArray[vp + 0] = dstX; mIntVertArray[vp + 1] = dstY; mIntVertArray[vp + 2] = dstX + scaledWidth; mIntVertArray[vp + 3] = dstY; mIntVertArray[vp + 4] = dstX + scaledWidth; mIntVertArray[vp + 5] = dstY + scaledHeight; mIntVertArray[vp + 6] = dstX; mIntVertArray[vp + 7] = dstY + scaledHeight; vp += 8; if (vp >= vLimit) { drawQuadArrayii(vp); vp = 0; } } } if (vp > 0) drawQuadArrayii(vp); } glColor4ub(static_cast<GLubyte>(mColor.r), static_cast<GLubyte>(mColor.g), static_cast<GLubyte>(mColor.b), static_cast<GLubyte>(mColor.a)); } void OpenGLGraphics::drawImagePattern2(GraphicsVertexes *vert, Image *image) { if (!image) return; OpenGLGraphicsVertexes *ogl = vert->getOGL(); glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha); bindTexture(Image::mTextureType, image->mGLImage); setTexturingAndBlending(true); std::vector<GLint*> *intVertPool = ogl->getIntVertPool(); std::vector<GLint*>::iterator iv; std::vector<int> *vp = ogl->getVp(); std::vector<int>::iterator ivp; // Draw a set of textured rectangles if (image->mTextureType == GL_TEXTURE_2D) { std::vector<GLfloat*> *floatTexPool = ogl->getFloatTexPool(); std::vector<GLfloat*>::iterator ft; for (iv = intVertPool->begin(), ft = floatTexPool->begin(), ivp = vp->begin(); iv != intVertPool->end(), ft != floatTexPool->end(), ivp != vp->end(); ++ iv, ++ ft, ++ ivp) { drawQuadArrayfi(*iv, *ft, *ivp); } } else { std::vector<GLint*> *intTexPool = ogl->getIntTexPool(); std::vector<GLint*>::iterator it; for (iv = intVertPool->begin(), it = intTexPool->begin(), ivp = vp->begin(); iv != intVertPool->end(), it != intTexPool->end(), ivp != vp->end(); ++ iv, ++ it, ++ ivp) { drawQuadArrayii(*iv, *it, *ivp); } } glColor4ub(static_cast<GLubyte>(mColor.r), static_cast<GLubyte>(mColor.g), static_cast<GLubyte>(mColor.b), static_cast<GLubyte>(mColor.a)); } void OpenGLGraphics::calcImagePattern(GraphicsVertexes* vert, Image *image, int x, int y, int w, int h) { if (!image) { vert->incPtr(1); return; } const int srcX = image->mBounds.x; const int srcY = image->mBounds.y; const int iw = image->mBounds.w; const int ih = image->mBounds.h; if (iw == 0 || ih == 0) { vert->incPtr(1); return; } const float tw = static_cast<float>(image->getTextureWidth()); const float th = static_cast<float>(image->getTextureHeight()); unsigned int vp = 0; const unsigned int vLimit = vertexBufSize * 4; OpenGLGraphicsVertexes *ogl = vert->getOGL(); ogl->init(); // Draw a set of textured rectangles if (image->mTextureType == GL_TEXTURE_2D) { float texX1 = static_cast<float>(srcX) / tw; float texY1 = static_cast<float>(srcY) / th; GLfloat *floatTexArray = ogl->switchFloatTexArray(); GLint *intVertArray = ogl->switchIntVertArray(); for (int py = 0; py < h; py += ih) { const int height = (py + ih >= h) ? h - py : ih; const int dstY = y + py; for (int px = 0; px < w; px += iw) { int width = (px + iw >= w) ? w - px : iw; int dstX = x + px; float texX2 = static_cast<float>(srcX + width) / tw; float texY2 = static_cast<float>(srcY + height) / th; floatTexArray[vp + 0] = texX1; floatTexArray[vp + 1] = texY1; floatTexArray[vp + 2] = texX2; floatTexArray[vp + 3] = texY1; floatTexArray[vp + 4] = texX2; floatTexArray[vp + 5] = texY2; floatTexArray[vp + 6] = texX1; floatTexArray[vp + 7] = texY2; intVertArray[vp + 0] = dstX; intVertArray[vp + 1] = dstY; intVertArray[vp + 2] = dstX + width; intVertArray[vp + 3] = dstY; intVertArray[vp + 4] = dstX + width; intVertArray[vp + 5] = dstY + height; intVertArray[vp + 6] = dstX; intVertArray[vp + 7] = dstY + height; vp += 8; if (vp >= vLimit) { floatTexArray = ogl->switchFloatTexArray(); intVertArray = ogl->switchIntVertArray(); ogl->switchVp(vp); vp = 0; } } } } else { GLint *intTexArray = ogl->switchIntTexArray(); GLint *intVertArray = ogl->switchIntVertArray(); for (int py = 0; py < h; py += ih) { const int height = (py + ih >= h) ? h - py : ih; const int dstY = y + py; for (int px = 0; px < w; px += iw) { int width = (px + iw >= w) ? w - px : iw; int dstX = x + px; intTexArray[vp + 0] = srcX; intTexArray[vp + 1] = srcY; intTexArray[vp + 2] = srcX + width; intTexArray[vp + 3] = srcY; intTexArray[vp + 4] = srcX + width; intTexArray[vp + 5] = srcY + height; intTexArray[vp + 6] = srcX; intTexArray[vp + 7] = srcY + height; intVertArray[vp + 0] = dstX; intVertArray[vp + 1] = dstY; intVertArray[vp + 2] = dstX + width; intVertArray[vp + 3] = dstY; intVertArray[vp + 4] = dstX + width; intVertArray[vp + 5] = dstY + height; intVertArray[vp + 6] = dstX; intVertArray[vp + 7] = dstY + height; vp += 8; if (vp >= vLimit) { intTexArray = ogl->switchIntTexArray(); intVertArray = ogl->switchIntVertArray(); ogl->switchVp(vp); vp = 0; } } } } ogl->switchVp(vp); vert->incPtr(1); } void OpenGLGraphics::updateScreen() { // glFlush(); // glFinish(); SDL_GL_SwapBuffers(); // may be need clear? // glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); } void OpenGLGraphics::_beginDraw() { glMatrixMode(GL_TEXTURE); glLoadIdentity(); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(0.0, static_cast<double>(mTarget->w), static_cast<double>(mTarget->h), 0.0, -1.0, 1.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glEnable(GL_SCISSOR_TEST); glEnableClientState(GL_VERTEX_ARRAY); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glHint(GL_LINE_SMOOTH_HINT, GL_FASTEST); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST); glHint(GL_POINT_SMOOTH_HINT, GL_FASTEST); glHint(GL_POLYGON_SMOOTH_HINT, GL_FASTEST); #ifndef __MINGW32__ glHint(GL_TEXTURE_COMPRESSION_HINT, GL_FASTEST); #endif // glScalef(0.5f, 0.5f, 0.5f); pushClipArea(gcn::Rectangle(0, 0, mTarget->w, mTarget->h)); } void OpenGLGraphics::_endDraw() { } SDL_Surface* OpenGLGraphics::getScreenshot() { int h = mTarget->h; int w = mTarget->w; SDL_Surface *screenshot = SDL_CreateRGBSurface( SDL_SWSURFACE, w, h, 24, 0xff0000, 0x00ff00, 0x0000ff, 0x000000); if (SDL_MUSTLOCK(screenshot)) SDL_LockSurface(screenshot); // Grap the pixel buffer and write it to the SDL surface glPixelStorei(GL_PACK_ALIGNMENT, 1); glReadPixels(0, 0, w, h, GL_RGB, GL_UNSIGNED_BYTE, screenshot->pixels); // Flip the screenshot, as OpenGL has 0,0 in bottom left unsigned int lineSize = 3 * w; GLubyte* buf = static_cast<GLubyte*>(malloc(lineSize)); for (int i = 0; i < (h / 2); i++) { GLubyte *top = static_cast<GLubyte*>( screenshot->pixels) + lineSize * i; GLubyte *bot = static_cast<GLubyte*>( screenshot->pixels) + lineSize * (h - 1 - i); memcpy(buf, top, lineSize); memcpy(top, bot, lineSize); memcpy(bot, buf, lineSize); } free(buf); if (SDL_MUSTLOCK(screenshot)) SDL_UnlockSurface(screenshot); return screenshot; } bool OpenGLGraphics::pushClipArea(gcn::Rectangle area) { int transX = 0; int transY = 0; if (!mClipStack.empty()) { transX = -mClipStack.top().xOffset; transY = -mClipStack.top().yOffset; } bool result = gcn::Graphics::pushClipArea(area); transX += mClipStack.top().xOffset; transY += mClipStack.top().yOffset; glPushMatrix(); glTranslatef(static_cast<GLfloat>(transX), static_cast<GLfloat>(transY), 0); glScissor(mClipStack.top().x, mTarget->h - mClipStack.top().y - mClipStack.top().height, mClipStack.top().width, mClipStack.top().height); return result; } void OpenGLGraphics::popClipArea() { gcn::Graphics::popClipArea(); if (mClipStack.empty()) return; glPopMatrix(); glScissor(mClipStack.top().x, mTarget->h - mClipStack.top().y - mClipStack.top().height, mClipStack.top().width, mClipStack.top().height); } void OpenGLGraphics::setColor(const gcn::Color& color) { mColor = color; glColor4ub(static_cast<GLubyte>(color.r), static_cast<GLubyte>(color.g), static_cast<GLubyte>(color.b), static_cast<GLubyte>(color.a)); mColorAlpha = (color.a != 255); } void OpenGLGraphics::drawPoint(int x, int y) { setTexturingAndBlending(false); glBegin(GL_POINTS); glVertex2i(x, y); glEnd(); } void OpenGLGraphics::drawLine(int x1, int y1, int x2, int y2) { setTexturingAndBlending(false); float x3 = static_cast<float>(x2) + 0.5f; float y3 = static_cast<float>(y2) + 0.5f; glBegin(GL_LINES); glVertex2f(static_cast<float>(x1) + 0.5f, static_cast<float>(y1) + 0.5f); glVertex2f(x3, y3); glEnd(); glBegin(GL_POINTS); glVertex2f(x3, y3); glEnd(); } void OpenGLGraphics::drawRectangle(const gcn::Rectangle& rect) { drawRectangle(rect, false); } void OpenGLGraphics::fillRectangle(const gcn::Rectangle& rect) { drawRectangle(rect, true); } void OpenGLGraphics::setTargetPlane(int width A_UNUSED, int height A_UNUSED) { } void OpenGLGraphics::setTexturingAndBlending(bool enable) { if (enable) { if (!mTexture) { glEnable(Image::mTextureType); mTexture = true; } if (!mAlpha) { glEnable(GL_BLEND); mAlpha = true; } } else { mLastImage = 0; if (mAlpha && !mColorAlpha) { glDisable(GL_BLEND); mAlpha = false; } else if (!mAlpha && mColorAlpha) { glEnable(GL_BLEND); mAlpha = true; } if (mTexture) { glDisable(Image::mTextureType); mTexture = false; } } } void OpenGLGraphics::drawRectangle(const gcn::Rectangle& rect, bool filled) { const float offset = filled ? 0 : 0.5f; const float x = static_cast<float>(rect.x); const float y = static_cast<float>(rect.y); const float width = static_cast<float>(rect.width); const float height = static_cast<float>(rect.height); setTexturingAndBlending(false); glDisableClientState(GL_TEXTURE_COORD_ARRAY); GLfloat vert[] = { x + offset, y + offset, x + width - offset, y + offset, x + width - offset, y + height - offset, x + offset, y + height - offset }; glVertexPointer(2, GL_FLOAT, 0, &vert); glDrawArrays(filled ? GL_QUADS : GL_LINE_LOOP, 0, 4); glEnableClientState(GL_TEXTURE_COORD_ARRAY); } bool OpenGLGraphics::drawNet(int x1, int y1, int x2, int y2, int width, int height) { unsigned int vp = 0; const unsigned int vLimit = vertexBufSize * 4; setTexturingAndBlending(false); glDisableClientState(GL_TEXTURE_COORD_ARRAY); const float xf1 = static_cast<float>(x1); const float xf2 = static_cast<float>(x2); const float yf1 = static_cast<float>(y1); const float yf2 = static_cast<float>(y2); for (int y = y1; y < y2; y += height) { mFloatTexArray[vp + 0] = xf1; mFloatTexArray[vp + 1] = static_cast<float>(y); mFloatTexArray[vp + 2] = xf2; mFloatTexArray[vp + 3] = static_cast<float>(y); vp += 4; if (vp >= vLimit) { drawLineArrayf(vp); vp = 0; } } for (int x = x1; x < x2; x += width) { mFloatTexArray[vp + 0] = static_cast<float>(x); mFloatTexArray[vp + 1] = yf1; mFloatTexArray[vp + 2] = static_cast<float>(x); mFloatTexArray[vp + 3] = yf2; vp += 4; if (vp >= vLimit) { drawLineArrayf(vp); vp = 0; } } if (vp > 0) drawLineArrayf(vp); glEnableClientState(GL_TEXTURE_COORD_ARRAY); return true; } void OpenGLGraphics::bindTexture(GLenum target, GLuint texture) { if (mLastImage != texture) { mLastImage = texture; glBindTexture(target, texture); } } inline void OpenGLGraphics::drawQuadArrayfi(int size) { glVertexPointer(2, GL_INT, 0, mIntVertArray); glTexCoordPointer(2, GL_FLOAT, 0, mFloatTexArray); glDrawArrays(GL_QUADS, 0, size / 2); } inline void OpenGLGraphics::drawQuadArrayfi(GLint *intVertArray, GLfloat *floatTexArray, int size) { glVertexPointer(2, GL_INT, 0, intVertArray); glTexCoordPointer(2, GL_FLOAT, 0, floatTexArray); glDrawArrays(GL_QUADS, 0, size / 2); } inline void OpenGLGraphics::drawQuadArrayii(int size) { glVertexPointer(2, GL_INT, 0, mIntVertArray); glTexCoordPointer(2, GL_INT, 0, mIntTexArray); glDrawArrays(GL_QUADS, 0, size / 2); } inline void OpenGLGraphics::drawQuadArrayii(GLint *intVertArray, GLint *intTexArray, int size) { glVertexPointer(2, GL_INT, 0, intVertArray); glTexCoordPointer(2, GL_INT, 0, intTexArray); glDrawArrays(GL_QUADS, 0, size / 2); } inline void OpenGLGraphics::drawLineArrayi(int size) { glVertexPointer(2, GL_INT, 0, mIntVertArray); glDrawArrays(GL_LINES, 0, size / 2); } inline void OpenGLGraphics::drawLineArrayf(int size) { glVertexPointer(2, GL_FLOAT, 0, mFloatTexArray); glDrawArrays(GL_LINES, 0, size / 2); } #endif // USE_OPENGL